Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
19002excellentexcellent11excellent
18002excellentexcellent11excellent
17003excellentexcellent11excellent
16003excellentexcellent11excellent
15002excellentexcellent11excellent
14004excellentexcellent11excellent
13003excellentexcellent11excellent
12003excellentexcellent11excellent
11002excellentexcellent11excellent
10005excellentexcellent11excellent
09005excellentexcellent11excellent
08006excellentexcellent11excellent
07009excellentexcellent11excellent
060021goodexcellent11excellent
050021goodexcellent21excellent
040026goodexcellent21excellent
030039lightly pollutedexcellent21excellent
020028goodexcellent21excellent
010031goodexcellent21excellent
000031goodexcellent21excellent
230018goodexcellent11excellent
22007excellentexcellent11excellent
21006excellentexcellent11excellent
20005excellentexcellent11excellent